SpecificationsSquare Drive: 1/2"Free Speed: 7,500 rpmOverall Length: 7-1/2" (172mm)Net Weight: 5-3/5 lbs (2.60 kg)Max. Torque: 450 ft./lbs. (610 Nm, 61000 Ncm)Bolt Capacity: 9/16" (14mm)Air Inlet Thread NPT: 1/4"Air Hose I.D. Size: 3/8" (10mm)Average Air Consumption: 4.20 cfm (1.98 l/sec, 119 l/min)Air Pressure: 90-120 psi (6.2 bar)Sound Level: 102 dB(A)Vibration: 6.0 m/s² SKU: AST.1812 Brand: ASTRO Country of Manufacture: Taiwan Supplier Part Number: ASTRO1812 Unit of Measure: PCS